Basic Clinical Radiobiology 2017

Prostate cancer case

Question 2: Which study-arm is biologically the most iso- effective with the standard-arm (74 Gy), regarding tumour control?

• Calculation:

E/α = BED = D (1 +

)

- 74 Gy – arm - 60 Gy – arm - 57 Gy – arm

= 74 (1 + = 60 (1 + = 57 (1 +

) = 172,67 Gy

) = 180 Gy ) = 171 Gy